Radiophotoluminescence and optically stimulated luminescence from Al2O3: C,Mg films using a 1D modular reader

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Authors

Institutes & Expert groups

  • SCK•CEN - Studiecentrum voor Kernenergie/Centre d’Etude de l’Energie Nucléaire

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Abstract

The radiophotoluminescence (RPL) and optically stimulated luminescence (OSL) combined signals from Al2O3:C,Mg films were investigated in the dose range of interest in radiotherapy medical dosimetry (0.1 e40 Gy). The results showed that the RPL signal is linear over the dose range investigated. The systems based on red excitation have a better dose detection range (starting from 0.2Gy), compared to the system based on UV excitation (1 Gy). The RPL dose measurements are performed using a modular system by illumination of the Al2O3:CMg detectors with 335 nm or 650 nm light and measuring the intensity of the 750 nm fluorescence, while OSL is measured using the modular system with blue 470 nm light. We demonstrated the feasibility of combining RPL and OSL readouts by proposing a protocol where one can acquire cumulative dose response (RPL) and dose reproducibility (OSL). The main challenge was to account for sensitization caused by accumulated dose when using the OSL technique, without affecting the RPL readouts.

Details

Original languageEnglish
Pages (from-to)218-224
Number of pages7
JournalRadiation Measurements
Volume106
DOIs
Publication statusPublished - 1 Nov 2017
EventSSD18 - 18th International Conference on Solid State Dosimetry - Marko Moscovitch School, Munich, Germany
Duration: 3 Jul 20168 Jul 2016

Keywords

  • Radiophotoluminescence (RPL), Optically stimulated luminescence (OSL), Al2O3:C,Mg, 1D modular reader

ID: 3894382